body {
    font-family: Arial, sans-serif;
    background: #f2f2f2;
    padding: 20px;
    color: #333;
}

h2 {
    text-align: center;
}

form {
    background: #fff;
    padding: 20px;
    max-width: 400px;
    margin: auto;
    border-radius: 10px;
}

input[type="number"], input[type="text"] {
    width: 95%;
    padding: 10px;
    margin-top: 8px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

input[type="submit"] {
    width: 100%;
    padding: 10px;
    margin-top: 15px;
    border: none;
    background: #00ff8c;
    color: white;
    cursor: pointer;
    border-radius: 6px;
    font-size: 16px;
}

input[type="submit"]:hover {
    background: #00b35a;
}

.resultado {
    background: #fff;
    padding: 20px;
    max-width: 350px;
    margin: 20px auto;
    border-radius: 10px;
    text-align: center;
}

img {
    margin-top: 10px;
    border-radius: 8px;
}